A study recently compiled by Bobbi Carothers and Harry Reis, who analyzed data from 13,301 men and women, finds significant overlap between the sexes on a number of characteristics commonly thought to be split fairly evenly by gender. Examples include:

desire to have sex with multiple partners

frequency of masturbation

willingness to have sex outside of a relationship

empathy for others

caring about close relationships

closeness with a best friend

fear of being too successful (as measured by agreement with statements like “Often the cost of success is greater than the reward”)